Simple High Voltage Converter for Geiger Tubes
l.i.papadopol
I’d like to present a simple high voltage converter primarily designed for powering Geiger tubes, though it can be adapted for different voltages and purposes. The circuit is based on…
l.i.papadopol
Adding HPDL2416 displays to Z80
Introduction I have enhanced my Z80-based system with dual HPDL2416 intelligent displays. Each HPDL2416 is a sophisticated display module containing four 5×7 dot matrix alphanumeric displays with built-in ASCII decoder,…
Elektronika MK61
Bringing an Elektronika MK61 Back to Life My friend Erik recently sent me a curious and interesting object: a Soviet-made “Elektronika MK61” calculator. Along with the device itself, I received…